Abstract

The phase relations in the Nd–Ti–Si ternary system at 773 K have been investigated by X-ray powder diffraction (XRD), differential thermal analysis (DTA) and scanning electron microscopy (SEM) equipped with energy dispersive analysis (EDX). It consists of 14 single-phase regions, 25 two-phase regions and 12 three-phase regions. No ternary compounds were observed in this work. The phase equilibria confirm the existence of two binary compounds: Nd 3Si 4 (space group: Cmcm, a = 0.4360(1), b = 2.4605(6), c = 0.3925(1)) and NdSi 1.6 (space group: Imma, a = 0.4138, b = 0.4111, c = 1.3731).

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